15KW Complete Offgrid Solar Kit + EG4 18kPV +  2x 14.3KW 48V EG4 Lithium Indoor Wall Battery + 15.4KW Solar with Ground Mount and Wiring

The 15KW Complete Offgrid Solar Kit + EG4 18kPV +  2x 14.3KW 48V EG4 Lithium Indoor Wall Battery + 15.4KW Solar with Ground Mount and Wiring  pairs the EG4 18kPV hybrid inverter/charger with a 15.4kW bifacial solar array and (2) 14.3kWh EG4 48V indoor wall batteries (28.6kWh total). Designed for complete off-grid living, this system can produce roughly 69,300 watts per day at 4.5 peak sun hours and is a great fit for mid-sized homes using around 2,000 kWh per month. The package is fully expandable for future panels or batteries.

Specifications

• Solar Array: 28 × 550W bifacial double-glass modules (15,400W total)

• Inverter/Charger: EG4 18kPV, 48V split-phase hybrid

• Battery Storage: (2) × 14.3kWh 48V EG4 Lithium Indoor Wall Batteries (28.6kWh total)

• Mounting: Complete IronRidge ground-mount kit (rails, top caps, connectors, fasteners & bolts); built around 3" SCH40 pipe (customer-supplied)

• Balance of System: Solar combiner box, gutter box, Anderson plug battery cable set, 500' PV 10AWG direct-burial wire, 100' 6AWG AC cable, MC4 crimp kit, installation manual

Features

• Bifacial Energy Gain: Rear-side harvesting yields up to ~25% additional production in reflective environments

• High Durability Panels: 5400Pa snow load & 2400Pa wind load; improved low-light output (cloudy, hazy, early morning)

• Off-Grid Ready: Suitable for small cabins, RVs, garages, and pole barns; powers common household essentials

• Appliances Supported: Well pump, washing machine, fans, TVs, lights, refrigerator, freezer, phones/PCs/tablets, smaller AC systems

• Expandable Architecture: Add panels or batteries anytime; combiner box prepped for future expansion

• Ground-Mount Simplicity: IronRidge kit supplies hardware; customer sources 3" pipe locally for cost-effective installs

Maintenance

• Daily: Monitor inverter/battery status; keep modules free of heavy debris for optimal performance

• Weekly: Visual check of wiring, combiner, and ground-mount hardware; verify production against expected sun hours (~4.5 hrs Midwest)

• Annually: Inspect racking torque, connectors, and weather seals; clean modules thoroughly; schedule a pro inspection if needed

Warranty

• Solar Panels: 30-year power warranty

• Inverter & Batteries: See EG4 manufacturer warranty documentation